View source for Torreyochloa

{{Treatment/ID
|accepted_name=Torreyochloa
|accepted_authority=G.L. Church
|publications=
|basionyms=
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Poeae;Torreyochloa
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Poaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Poaceae subfam. Pooideae]]</div><div class="higher-taxon"><small>tribe</small>[[Poaceae tribe Poeae]]</div><div class="higher-taxon"><small>genus</small>[[Torreyochloa]]</div></div>
|volume=Volume 24
|mention_page=
|treatment_page=page 607
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial; rhizomatous. <b>Culms</b> 18-145 cm, usually erect, sometimes decumbent and rooting at the lower nodes; internodes hollow. <b>Sheaths</b> open to the base; auricles absent; ligules membranous; blades flat. <b>Inflorescences</b> terminal panicles; branches scabrous, usually densely scabrid distally; pedicels less than 0.5 mm thick. <b>Spikelets</b> pedicellate, laterally compressed to terete, with 2-8 florets; disarticulation above the glumes and beneath the florets. <b>Glumes</b> unequal, shorter than the lowest lemma, rounded to weakly keeled, membranous, veins obscure to prominent, unawned; lower glumes 1(3)-veined; upper glumes (1)3(5)-veined; calluses blunt, glabrous; lemmas membranous, rounded to weakly keeled, sometimes pubescent, particularly proximally, prominently (5)7-9-veined, veins more or less parallel, veins and interveins usually scabridulous, particularly distally, lateral veins usually reduced or absent, apices scabridulous and entire to serrate-erose, unawned; paleas subequal to the lemmas, 2-veined; lodicules 2, free, glabrous, entire or toothed; anthers usually 3; ovaries usually hairy, sometimes glabrous. <b>Caryopses</b> shorter than the lemmas, concealed at maturity, oblong, flattened dorsally, falling free; hila oblong, about 1/3 the length of the caryopses. <b>x</b> = 7.</span><!--

-->{{Treatment/Body
|distribution=Conn.;N.J.;N.Y.;Wash.;Del.;Wis.;W.Va.;Mass.;Maine;N.H.;R.I.;Vt.;Wyo.;N.Mex.;N.C.;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.S.;Ont.;P.E.I.;Que.;Sask.;Yukon;Tenn.;Pa.;Calif.;Nev.;Va.;Colo.;Alaska;Ill.;Ga.;Ind.;Ariz.;Idaho;Md.;Ohio;Utah;Mo.;Minn.;Mich.;Mont.;S.C.;Ky.;Oreg.;S.Dak.
|discussion=<p><i>Torreyochloa</i> grows in cold, wet, non-saline environments. It includes the two North American species treated below, plus two additional taxa in northeastern Asia (Koyama & Kawano 1964). Although similar to <i>Glyceria</i> and <i>Puccinellia</i>, <i>Torreyochloa</i> is not closely related to either (Church 1952; Soreng et al. 1990). It is distinguished from <i>Glyceria</i> by its open leaf sheaths, and from <i>Puccinellia</i> by the 7-9 (occasionally 5) prominent, rather than faint, lemma veins.</p>
|tables=
|references={{Treatment/Reference
|id=church1952a
|text=Church, G.L. 1952. The genus Torreyochloa. Rhodora 54:197-200
}}{{Treatment/Reference
|id=koyama1964a
|text=Koyama, T. and S. Kawano. 1964. Critical taxa of grasses with North American and eastern Asiatic distribution. Canad. J. Bot. 42:859-884
}}{{Treatment/Reference
|id=soreng1990b
|text=Soreng, R.J., J.I. Davis, and J.J. Doyle. 1990. A phylogenetic analysis of chloroplast DNA restriction site variation in the Poaceae subfam. Pooideae. PL Syst. Evol. 172:83-97.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Mature inflorescences linear to narrowly elliptic, 0.3-1 cm wide, 5.5-19 times as long as wide; widest cauline blades 3.4-7.2 mm wide
|[[Torreyochloa erecta|Torreyochloa erecta]]
|-id=key-0-1
|1
|Mature inflorescences conic, ovoid, or obovoid, 1-16 cm wide, 1-7.5 times as long as wide; widest cauline blades 1.5-18 mm wide
|[[Torreyochloa pallida|Torreyochloa pallida]]
|}
</div></div><!--

-->{{#Taxon:
name=Torreyochloa
|author=Jerrold I. Davis;
|authority=G.L. Church
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Poaceae
|illustrator=Annaliese Miller
|illustration copyright=Utah State University
|distribution=Conn.;N.J.;N.Y.;Wash.;Del.;Wis.;W.Va.;Mass.;Maine;N.H.;R.I.;Vt.;Wyo.;N.Mex.;N.C.;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.S.;Ont.;P.E.I.;Que.;Sask.;Yukon;Tenn.;Pa.;Calif.;Nev.;Va.;Colo.;Alaska;Ill.;Ga.;Ind.;Ariz.;Idaho;Md.;Ohio;Utah;Mo.;Minn.;Mich.;Mont.;S.C.;Ky.;Oreg.;S.Dak.
|reference=church1952a;koyama1964a;soreng1990b
|publication title=
|publication year=
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/200273ad09963decb8fc72550212de541d86569d/coarse_grained_fna_xml/V24/V24_859.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Poeae
|genus=Torreyochloa
}}<!--

-->[[Category:Treatment]][[Category:Poaceae tribe Poeae]]